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substitution mehtod 4x+5y=-27 -6x+y=49
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m= -4 (3,0)
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A rectangular box with open top is to be formed from a rectangular piece of cardboard which is 65 inches by 9 inches by cutting a square of size inches from each corner, and folding up the sides. What is the largest possible volume of such a box? f(x) has a stationary point at x=?
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Two hundred stones are placed on the ground 2 feet apart, the first being 2 feet from a basket. If the basket and all the stones are in a straight line, how far does a person travel who starts form the basket and brings the stones to it one by one?
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The area of the rectangular piece of cardboard shown on the left is 130 square inches. The cardboard is used to make an open box by cutting a 3 inch square from each corner and turning up the sides. If the box is to have a volume of 84 cubic inches, find the length and width of the cardboard that...
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See attachment, The work is completed i need you to check and make sure is correct and make changes if necessary.
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A car traveled 1120 mi at a certain speed. If the speed had been 14 mph faster, the trip could have been made in 4 hr less time. Find the speed
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1. The number of plastic straws produced by a machine varies directly as the amount of time the machine is operating. If the machine produces 20,000 straws in 8 hours, how many straws can it produce in 50 hours? 2. The time required to empty a tank varies inversely as the rate of pumping. If...
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Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 5.5 {\rm mi}^2{\rm /hr}. How rapidly is radius of the spill increasing when the area is 4 {\rm mi}^2?
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Write the partial fraction decomposition of the rational expression. 1/(x+1)(x^2+4)
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- 1. I’m having problems with my math. Can you help me? All I need is an example just to make sure I'm on track.
- Solve the following
- a) 3/(n+1)-1/(n+1)=14/(n^2-1)
- b) 1/(y-1 )+y/(1-y)
- c)4/(x-5)-3/(x+2)=28/(x^2-3x-10)
- d) (x-2)/(8x-24)*(5x-15)/(x^2 -4)
- e) z/(z-1)+1/2=3/z
- f) (x-3)/(x^2+2x-15)-(4-x)/(x^2-9x+20)
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